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Eliminate libm-test.stmp. 

math/Makefile uses libm-test.stmp to handle dependencies involving
multiple generated files all generated by a single sequence of
commands in a single Makefile rule.

Having separated the libm-test-ulps.h and libm-test.c generation into
separate runs of gen-libm-test.pl, there is now no need for a single
rule to generate multiple target files; each of the three target files
involved can be generated by a separate Makefile rule, meaning normal
dependencies on the individual files can be used and so libm-test.stmp
is not needed at all.  This patch does just that, eliminating the
.stmp file, in further preparation for when there are many separate
libm-test-<func>.c files generated from libm-test-<func>.inc and the
dependencies are on just the relevant .c file in each case.

Tested for x86_64.

	* math/Makefile (generated): Do not include libm-test.stmp.
	($(addprefix $(objpfx), $(libm-tests-generated))): Do not depend
	on $(objpfx)libm-test.stmp.
	($(objpfx)libm-test.stmp): Remove rule.
	($(objpfx)libm-test-ulps.h): New rule.
	($(objpfx)libm-test.c): Likewise.
	($(objpfx)libm-have-vector-test.h): Likewise.
	($(addprefix $(objpfx), $(libm-tests.o)): Depend directly on
	individual generated files, not libm-test.stmp.
This commit is contained in:
Joseph Myers 2017-02-06 18:28:33 +00:00
parent 7e1e68b45c
commit 5cd81881e2
2 changed files with 23 additions and 11 deletions
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10
ChangeLog
View File

@ -1,5 +1,15 @@
2017-02-06 Joseph Myers <joseph@codesourcery.com>
* math/Makefile (generated): Do not include libm-test.stmp.
($(addprefix $(objpfx), $(libm-tests-generated))): Do not depend
on $(objpfx)libm-test.stmp.
($(objpfx)libm-test.stmp): Remove rule.
($(objpfx)libm-test-ulps.h): New rule.
($(objpfx)libm-test.c): Likewise.
($(objpfx)libm-have-vector-test.h): Likewise.
($(addprefix $(objpfx), $(libm-tests.o)): Depend directly on
individual generated files, not libm-test.stmp.
* math/gen-libm-test.pl ($output_dir): Remove variable.
($srcdir): Likewise.
($opt_a): New variable.

24
math/Makefile
View File

@ -208,20 +208,21 @@ libm-vec-test-wrappers = $(addsuffix -wrappers, $(libm-vec-tests))
test-extras += $(libm-vec-test-wrappers)
extra-test-objs += $(addsuffix .o, $(libm-vec-test-wrappers))
libm-tests-generated = libm-test-ulps.h libm-have-vector-test.h libm-test.c
generated += $(libm-tests-generated) libm-test.stmp
generated += $(libm-tests-generated)
ulps-file = $(firstword $(wildcard $(sysdirs:%=%/libm-test-ulps)))
$(addprefix $(objpfx), $(libm-tests-generated)): $(objpfx)libm-test.stmp
$(objpfx)libm-test.stmp: $(ulps-file) libm-test.inc gen-libm-test.pl \
gen-libm-have-vector-test.sh auto-libm-test-out
$(objpfx)libm-test-ulps.h: $(ulps-file) gen-libm-test.pl
$(make-target-directory)
$(PERL) gen-libm-test.pl -u $< -H "$(objpfx)libm-test-ulps.h"
$(PERL) gen-libm-test.pl -c libm-test.inc -a auto-libm-test-out \
-C "$(objpfx)libm-test.c"
$(SHELL) gen-libm-have-vector-test.sh > $(objpfx)libm-have-vector-test.h
@echo > $@
$(PERL) gen-libm-test.pl -u $< -H $@
$(objpfx)libm-test.c: libm-test.inc gen-libm-test.pl auto-libm-test-out
$(make-target-directory)
$(PERL) gen-libm-test.pl -c $< -a auto-libm-test-out -C $@
$(objpfx)libm-have-vector-test.h: libm-test.inc gen-libm-have-vector-test.sh
$(make-target-directory)
$(SHELL) gen-libm-have-vector-test.sh > $@
endif
libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH
@ -337,7 +338,8 @@ $(foreach t, $(call type-foreach, $(gen-all-calls)), \
ifneq (no,$(PERL))
# This must come after the inclusion of sysdeps Makefiles via Rules.
$(addprefix $(objpfx), $(libm-tests.o)): $(objpfx)libm-test.stmp
$(addprefix $(objpfx), $(libm-tests.o)): $(addprefix $(objpfx),\
$(libm-tests-generated))
# Run the math programs to automatically generate ULPs files.
.PHONY: regen-ulps